论相干性条件

TO DISCUSS THE COHERENCY CONDITION

分析了频率相同，位相差恒定，振动方向不同的两束光的干涉现象，得出了光波的相干性条件。

In this paper, we analysis the interference phenomenon of two beams of same frequency phase difference is constant distict vibrational direction. To give out the coherence condition of light wave.